managehomepages.java

java 写的一个新闻发布系统

                session.setAttribute("homepageBean",hp);

            }

            // set new values
            hp.setName(name);
            hp.setDescr(descr);

            if ( go.equals("save") ){

                boolean error = false;

                if (name == null || name.trim().equals("") ){
                    request.setAttribute("warningMsg","A name is required");
                    error = true;
                }

                if ( !error ){
                    // specific homepage save
                    if ( hp.getType() == HomepageTypes.HOMEPAGE_LINK ){
                        error = !saveLink( request, response, session );
                    } else if ( hp.getType() == HomepageTypes.HOMEPAGE_COPY ){
                        error = !saveCopy( request, response, session );
                    } else if ( hp.getType() == HomepageTypes.HOMEPAGE_NEW ){
                        error = !saveNew( request, response, session );
                    }
                }

                if ( !error ){
                    // reset session
                    session.setAttribute("homepageBean",null);
                    displayMain( request, response, session );
                    return;
                }
            }
        }

        if ( hp.getType() == HomepageTypes.HOMEPAGE_LINK ){
            prepareAddLink(request,response,session);
        } else if ( hp.getType() == HomepageTypes.HOMEPAGE_COPY ){
            prepareAddCopy(request,response,session);
        } else if ( hp.getType() == HomepageTypes.HOMEPAGE_NEW ){
            prepareAddNew(request,response,session);
        }

        // display the form
        doRedirect( request, response, JSP + "add" );

    }

    //--------------------------------------------------------------------------
    /**
     * Prepares information to display specific data for homepage of type link.
     *
     * @author  Khue Nguyen
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void prepareAddLink(	HttpServletRequest    request,
                                    HttpServletResponse   response,
                                    HttpSession           session )
    throws IOException, ServletException, JahiaException
    {

        prepareAdd( request, response, session );

        JahiaHomepageLink hp = (JahiaHomepageLink)session.getAttribute("homepageBean");
        if ( hp == null ){
            displayError(request,response,"Cannot found the requested Homepage bean in session");
            return;
        }

        // retrieve form values...

        String value = (String) request.getParameter("pageid");
        int pageID = -1;
        if ( value != null ){
            pageID = Integer.parseInt(value);
            hp.setPageID(pageID);
        }

        // 	get value from engineMap from the Tree Copy engine
        HashMap engineMap = (HashMap)session.getAttribute(ParamBean.SESSION_JAHIA_ENGINEMAP);

        if ( engineMap != null ){
            // check if the Tree engine was opened for this source page
            value = (String)engineMap.get(CopyTree_Engine.ENGINE_LAUNCHER_NAME);
            if ( (value != null) && ( value.equals(CHOOSEPAGE_LAUNCHER_LINK_SOURCEPAGE) ) ){

                // get the selected page
                Integer I = (Integer)engineMap.get(CopyTree_Engine.SOURCEPAGE_ID);
                if ( I != null ){
                    pageID = I.intValue();
                }

                hp.setPageID(pageID);

                // reset engine map
                session.setAttribute(ParamBean.SESSION_JAHIA_ENGINEMAP,null);
            }
        }

        // set the initial source page for the Page Tree Engine
        request.setAttribute("linkInitialSourcePage",new Integer(hp.getPageID()));

        if ( operation.equals("add") ){
            request.setAttribute("includeSpecificSection","addlink");
        } else if ( operation.equals("detail") )
            request.setAttribute("includeSpecificSection","detaillink");

    }

    //--------------------------------------------------------------------------
    /**
     * Prepares information to display specific data for homepage of type copy.
     *
     * @author  Khue Nguyen
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void prepareAddCopy(	HttpServletRequest    request,
                                    HttpServletResponse   response,
                                    HttpSession           session )
    throws IOException, ServletException, JahiaException
    {

        prepareAdd( request, response, session );

        JahiaHomepageCopy hp = (JahiaHomepageCopy)session.getAttribute("homepageBean");
        if ( hp == null ){
            displayError(request,response,"Cannot found the requested Homepage bean in session");
            return;
        }

        // retrieve form values...

        String value = (String) request.getParameter("pageid");
        int pageID = -1;
        int destPageID = -1;
        int depth = 1;
        int depthType = 2;

        if ( value != null ){
            pageID = Integer.parseInt(value);
            hp.setPageID(pageID);
        }

        value = (String) request.getParameter("destpageid");
        if ( value != null ){
            destPageID = Integer.parseInt(value);
            hp.setParentPageID(destPageID);
        }

        value = (String) request.getParameter("depth");
        if ( value != null ){
            try {
                depth = Integer.parseInt(value);
            } catch ( Throwable t ){
            }
            if ( depth >= 0 )
                hp.setCopyDepth(depth);

        }

        value = (String) request.getParameter("depthtype");
        if ( value != null ){
            depthType = Integer.parseInt(value);
        }


        request.setAttribute("depthType",new Integer(depthType));
        if ( operation.equals("add") ){
            request.setAttribute("includeSpecificSection","addcopy");
        } else if ( operation.equals("detail") )
            request.setAttribute("includeSpecificSection","detailcopy");

    }

    //--------------------------------------------------------------------------
    /**
     * Prepares information to display specific data for homepage of type new.
     *
     * @author  Khue Nguyen
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void prepareAddNew(		HttpServletRequest    request,
                                    HttpServletResponse   response,
                                    HttpSession           session )
    throws IOException, ServletException, JahiaException
    {

        prepareAdd( request, response, session );

        JahiaHomepageNew hp = (JahiaHomepageNew)session.getAttribute("homepageBean");
        if ( hp == null ){
            displayError(request,response,"Cannot found the requested Homepage bean in session");
            return;
        }

        // get only visible templates
        Enumeration templates = ServicesRegistry.getInstance()
            .getJahiaPageTemplateService().getPageTemplates (site.getID(), true);

        JahiaPageBaseService pageService = JahiaPageBaseService.getInstance();

        // retrieve previous form values...

        String value = (String) request.getParameter("destpageid");
        int pageID = -1;
        if ( value != null ){
            pageID = Integer.parseInt(value);
            hp.setParentPageID(pageID);
        }

        value = (String) request.getParameter("template");
        int templateID = -1;
        if ( value != null ){
            templateID = Integer.parseInt(value);
            hp.setTemplateID(templateID);
        }

        request.setAttribute("templates",templates);
        if ( operation.equals("add") ){
            request.setAttribute("includeSpecificSection","addnew");
        } else if ( operation.equals("detail") )
            request.setAttribute("includeSpecificSection","detailnew");


    }

    //--------------------------------------------------------------------------
    /**
     * Prepares information common to all type of home pages.
     *
     * @author  Khue Nguyen
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void prepareAdd(	HttpServletRequest    request,
                                HttpServletResponse   response,
                                HttpSession           session )
    throws IOException, ServletException, JahiaException
    {

        // get all pages id...
        JahiaPageBaseService pageService = JahiaPageBaseService.getInstance();
        Vector allPagesIDVector = pageService.getPageIDsInSite(site.getID(),
            org.jahia.services.pages.PageInfoInterface.TYPE_DIRECT);

        // get all pages infos...
        Vector pages = new Vector();
        Enumeration allPagesIDEnumeration  = allPagesIDVector.elements();
        while(allPagesIDEnumeration.hasMoreElements()) {
            Integer pageID = (Integer) allPagesIDEnumeration.nextElement();
            try {
                pages.add ((JahiaPage)pageService
                            .lookupPageWhitoutTemplates (pageID.intValue()));
            } catch (JahiaTemplateNotFoundException jtnfe) {
            }
        }

        // set all pages infos
        request.setAttribute("pages",  pages);

    }

    //--------------------------------------------------------------------------
    /**
     * Save homepage of type link.
     *
     * @author  Khue Nguyen
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private boolean saveLink(	HttpServletRequest    request,
                                HttpServletResponse   response,
                                HttpSession           session )
    throws IOException, ServletException, JahiaException
    {

        JahiaPageBaseService pageService = JahiaPageBaseService.getInstance();

        // retrieve previous form values...
        JahiaPage selectedPage = null;

        String value = (String) request.getParameter("pageid");
        int pageID = -1;
        if ( value != null ){
            pageID = Integer.parseInt(value);

            try {
                if ( pageID != -1 )
                    selectedPage = (JahiaPage)pageService
                            .lookupPageWhitoutTemplates(pageID);
            } catch ( Throwable t ){
            }
        }

        if ( selectedPage == null ){
            request.setAttribute("warningMsg","The page you choose is not available");
            return false;
        }

        JahiaHomepageLink hp = (JahiaHomepageLink)session.getAttribute("homepageBean");
        if ( hp == null ){
            throw new JahiaException(CLASS_NAME+".saveLink",
                                        "Homepage bean not found in session",
                                        JahiaException.ERROR,
                                        JahiaException.ERROR);
        }

        hp.setPageID(pageID);
        hpServ.saveHomepage(hp,site.getAclID());

        return true;
    }

    //--------------------------------------------------------------------------
    /**
     * Save homepage of type copy.
     *
     * @author  Khue Nguyen
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private boolean saveCopy(	HttpServletRequest    request,
                                HttpServletResponse   response,
                                HttpSession           session )
    throws IOException, ServletException, JahiaException
    {

        prepareAdd( request, response, session );

        JahiaPageBaseService pageService = JahiaPageBaseService.getInstance();

        // retrieve previous form values...
        JahiaPage selectedPage = null;
        JahiaPage destPage = null;

        String value = (String) request.getParameter("pageid");
        int pageID = -1;
        int depth = 1;
        int depthType = 2;

        if ( value != null ){
            pageID = Integer.parseInt(value);

            try {
                if ( pageID != -1 )
                    selectedPage = (JahiaPage)pageService
                            .lookupPageWhitoutTemplates(pageID);
            } catch ( Throwable t ){
            }
        }

        if ( selectedPage == null ){